William b



(No Model.)

W. E. BUFFER.)

FURNAGE DAMPER.

No.'245,560. Patented Aug. 9,1881.

INVENTOR I- In UNITED lSTATES PATENT OFFICE.

WILLIAM E. BUFFER, OF NEW YORK, N. Y.

FURNACE-DANI PER.

SPECIFICATION forming part of Letters Patent No. 245,560, dated August 9, 1881.

Application iiled October 27, i880. (No model.)

To all whom it may concern:

Be it known that I, WILLIAn E. PUFFER, of the city ofNewYork,in the county and State of New York, have invented certain new and useful Improvements in Furnace Dampers, which improvements are fully described in the following specifica-tion and the drawings for1ning a part thereof.

The object of my invention is twofold, iirst, to prevent the accumulation of soot on the edges of the damper-wing and its seat, and also to prevent the rusting of the said parts and of otherjoints of the damper; second, a damper which may be quickly and easily attached and adjusted to any furnace or stove pipe by other than skilled workman. This I accomplish; and the invention consists in binding the edges of the damper-wing and other joints with copper, and in forming the pivots on which the wing turns and thejournals of the same metal; also, in attaching the barrel of the damper to the main pipe by means of a band, having a slot in one or both ends, which passes around the pipe, and connects by set-screwswhich 'pass through said slots into the damper-barrel, the points of the screws entering notches in the main pipe, so as to prevent the damper moving from its seat on the pipe when adjusted to it, all of which is shown in detail in the accompanying drawings, in which similar letters of reference indicate like parts in all the figures.

Figure l is a front view of a section of pipe provided with one of my iin-proved dempers. Fig. 2 is a plan view of the damper. Fig. 3 is a cross-section of the damper and pipe, taken at lines :c x of Figs. l and 2. Fig.4 is acrosssection of the same, theupper partof the damper being removed, and shows another forin of the band M, hereinafter described. Fig. 5 is a sectional side elevation of the pipe, showing the arrangement of the screw N and notch It, as hereinafter set forth.

Aisafurnaceorstove pipe; Band B', damperbarrel, made in two sections. The edge ofthe lower end of section B is cut out so as to conform to the periphery of pipe A, 4and has the flanges a a. The upper edge of this section B enters the lower end of section B', so as to make or form a slip-joint, and is bound with copper, as shown at b. The upper section, B', has its upper edge also bound with copper and notched at two points for the reception of the pivots of the wing, said notches being directly opposite each other, at which points are attached the pivot-journals D D, also made of copper. E E are the pivots, which are of copper and attached iirinly to the dainper-wingF. Said wing is formed in the usual way, and so as to conform to the contour of the mouth of the damperbarrel, and its edges are bound with copper, as shown at e c, Fig. 3. The front of the wing F,when closed, bears on the copper-bound edge of section B', (see letter C in Fig. 3,) and the rear edge on the copper seat0',which is formed by increasing the thickness of the copper binding of section B' at this point on the inside of its mouth, so as to make an internal projection.

Gis a small pin, which projects internally from section B', and forms a stop to prevent the wing F opening too wide. A ring, H, surrounds thelower end ofseotion B', and is rmly attached to it, the top of which is flat to give bearing to the clamping-hooks I I,which, hooking on said ring or projection H, extend down over the upper part of section B. Said'hooks have slots 'i in their lower portion, through which pass the set-screws which screw into section B. y

M is a strap or band of metal, having the slots P P near the ends, through which pass the set-screws N N, which screw into the lower end of section B, and are of such length that they will take bearing in notches R R, cut in the edge of the opening in pipe A, which opening is covered by the damper. This strap M passes around the periphery of the pipe, as shown in Fig. 3. In Fig. 4 another form of this strap M is shown. Itis divided into two parts and connected bythe clamping-bolt S, as shown in said figure.

Operation: All the contact edges ot the damper being bound with copper, the sootdoes not attach, as it does to other met-al; and as copper is not subject to rust 'or corrosion, like iron or other metals, the moving parts, being of that metal, will not stick or cut away when the furnace and damper are out of use during the warm season 5 and, further, it will be seen that by t-he operation ofthe strap IWI the dam per can be applied to a pipe by other than skilled workmen, by cutting a hole in the pipe, placing the damper overit, and attaching the strap, as before described. The operation of the sectional barrel is such that by looscnin g the set- ICO screws section B may be turned on section B so as to bring the wing of the damper into horizontal position, whatever may be the position of the pipe A-. e., Whether horizontal or upright.

I am aware that a band or strap of metal has been used to connect pipes together at right angles to each other. Therefore I do not Wish to be understood as broadly claiming such; but,

Having thus described my invention and its operation, what I claim, and desire Letters Patent for, is

1. In a furnace or stove damper, a wing provided with copper pivots and journals, as and for the object set forth.

2. In a furnace or stove, a damper havingthe contact edges andjoints bound or protected with copper, substantially as and for theobjeet set forth.

3. In combination with a stove or furnace pipe, a damper-barrel composed of fixed seetion B and the axiallyadjustable section B', provided with the damper F, the sections bein g connected together by suitable clamps, so as to permit the dampersection to be adjusted for the purpose ot' keeping the damper-shaft in a horizontal position, substantially as herein shown and described.

4. The device for attaching the dam per-barrel, which consists of a- U-shaped strap which embraces the main pipe, having its ends adjustably attached to opposite sides ofthe damper-barrel, and in combination with the barrel and the main pipe, as herein shown and set forth.

5. The combination, in a furnace or stove damper attaching device, of an adjustable U- shaped strap which embraces the main pipe and has its ends attached to the damper-barrel, the main pipe, and the damperbarrel, all as herein shown and described.

6. The main pipe, provided with notches R R, the damper-barrel, and the screws N N, all combined and as herein shown and described, for the purpose set forth.

7. The damper-section B', provided with the ring H, in combination with the adjustable clamping-hooks I, attached to section B.

WILLIAM E. BUFFER.

Vitnesses:

WM. M. CUTHBERT, J. E. DisBRoW. 

